Study on Water Saving Potential and Net Profit of Zea mays L.: The Role of Surface Mulching with Micro-Spray Irrigation
| Autor: | Xue Shang, Zhaoquan He, Tonghui Zhang |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2020 |
| Předmět: |
Irrigation
economic profit Growing season water saving potential 010501 environmental sciences water resources lcsh:Technology 01 natural sciences lcsh:Chemistry Yield (wine) surface mulching General Materials Science Water-use efficiency lcsh:QH301-705.5 Instrumentation 0105 earth and related environmental sciences Fluid Flow and Transfer Processes lcsh:T Process Chemistry and Technology General Engineering 04 agricultural and veterinary sciences Straw lcsh:QC1-999 Computer Science Applications Water resources lcsh:Biology (General) lcsh:QD1-999 Agronomy lcsh:TA1-2040 040103 agronomy & agriculture 0401 agriculture forestry and fisheries Environmental science lcsh:Engineering (General). Civil engineering (General) Organic fertilizer Mulch micro-spray irrigation lcsh:Physics |
| Zdroj: | Applied Sciences Volume 10 Issue 1 Applied Sciences, Vol 10, Iss 1, p 402 (2020) |
| ISSN: | 2076-3417 |
| DOI: | 10.3390/app10010402 |
| Popis: | Water shortage threatens agricultural sustainability in Horqin Sandy Land, northeast China. To explore the effects of various surface mulching patterns with micro-spray irrigation on the yield, water consumption (ETc), and water-saving potential of maize (Zea mays L.), we used three treatments: straw mulching (JG), organic fertilizer mulching (NF), and no mulching (WG control). In each treatment, plants were supplied with 500 mm of total water (irrigation plus precipitation) during the entire growing season and were irrigated with the amount of total water supply minus precipitation. Yield and water use efficiency (WUE) showed a significant negative correlation with water saving potential per unit yield (Py) and water saving potential per unit area (Sp), which were also consistent with their relationships in the function model. Meanwhile, a remarkably positive correlation occurred between yield, WUE, and net economic profit, respectively. The JG treatment, which was mainly affected by light and temperature production potential (Yc), grain yield, and ETc, showed the lowest Py (0.16 m3 kg&minus 1) and Sp (2572.31 m3 hm&minus 2), and the maximum increase in yield, WUE, and net economic profit, extending to 16,178.40 kg hm&minus 2, 3.25 kg m&minus 3, 17,610.09 yuan hm&minus 2, respectively, which were significantly higher than those in NF and WG, (p < 0.05). Thus, straw mulching with micro-spray irrigation was the best treatment for maximizing yield and WUE. Organic manure mulching and no mulching need further investigation, as these showed high Py and Sp, which were together responsible for lower WUE. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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